/* SPDX-License-Identifier: GPL-2.0 */
/*
* Linker script for vsyscall DSO. The vsyscall page is an ELF shared
* object prelinked to its virtual address, and with only one read-only
* segment (that fits in one page). This script controls its layout.
*/
#include <asm/asm-offsets.h>
#ifdef CONFIG_CPU_LITTLE_ENDIAN
OUTPUT_FORMAT(
"elf32-sh-linux",
"elf32-sh-linux",
"elf32-sh-linux")
#else
OUTPUT_FORMAT(
"elf32-shbig-linux",
"elf32-shbig-linux",
"elf32-shbig-linux")
#endif
OUTPUT_ARCH(sh)
/* The ELF entry point can be used to set the AT_SYSINFO value. */
ENTRY(__kernel_vsyscall);
SECTIONS
{
. = SIZEOF_HEADERS;
.hash : { *(.hash) } :text
.gnu.hash : { *(.gnu.hash) }
.dynsym : { *(.dynsym) }
.dynstr : { *(.dynstr) }
.gnu.version : { *(.gnu.version) }
.gnu.version_d : { *(.gnu.version_d) }
.gnu.version_r : { *(.gnu.version_r) }
/*
* This linker script is used both with -r and with -shared.
* For the layouts to match, we need to skip more than enough
* space for the dynamic symbol table et al. If this amount
* is insufficient, ld -shared will barf. Just increase it here.
*/
. = 0x400;
.text : { *(.text) } :text =0x90909090
.note : { *(.note.*) } :text :note
.eh_frame_hdr : { *(.eh_frame_hdr ) } :text :eh_frame_hdr
.eh_frame : {
KEEP (*(.eh_frame))
LONG (0)
} :text
.dynamic : { *(.dynamic) } :text :dynamic
.useless : {
*(.got.plt) *(.got)
*(.
data .
data.* .gnu.linkonce.d.*)
*(.dynbss)
*(.bss .bss.* .gnu.linkonce.b.*)
} :text
}
/*
* Very old versions of ld do not recognize this name token; use the constant.
*/
#define PT_GNU_EH_FRAME 0x6474e550
/*
* We must supply the ELF program headers explicitly to get just one
* PT_LOAD segment, and set the flags explicitly to make segments read-only.
*/
PHDRS
{
text PT_LOAD FILEHDR PHDRS FLAGS(5);
/* PF_R|PF_X */
dynamic PT_DYNAMIC FLAGS(4);
/* PF_R */
note PT_NOTE FLAGS(4);
/* PF_R */
eh_frame_hdr PT_GNU_EH_FRAME;
}
/*
* This controls what symbols we export from the DSO.
*/
VERSION
{
LINUX_2.6 {
global:
__kernel_vsyscall;
__kernel_sigreturn;
__kernel_rt_sigreturn;
local: *;
};
}
